plural noun
Ru·​dis·​ta | \ rüˈdistə \

Definition of Rudista

in some classifications
: a division of Eulamellibranchia comprising extinct chiefly Cretaceous bivalve mollusks with one valve elongate, conical, and thick-shelled and the other small and fitting like a lid on the first

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Other Words from Rudista

rudistan \ (ˈ)⸗¦⸗stən \ adjective or noun
rudistid \ (ˈ)⸗¦⸗stə̇d \ adjective or noun

History and Etymology for Rudista

New Latin, from Latin rudis rude, raw + -ista -ist

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Cite this Entry

“Rudista.” Dictionary, Merriam-Webster, Accessed 6 Dec. 2021.

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